.login_sb {
  position: fixed;
  bottom: 0rpx;
  height: 125rpx;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  font-size: 30rpx;
  color: #333333;
  background-color: #fff;
  width: 100%;
}